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Gusdai t1_jai2430 wrote

It takes a couple of years to shift, because it takes a lot of infrastructure (and planning) to mine and refine.

But remember when China talked of export quotas on these minerals, to punish certain countries (Japan at the time)? That was a couple of years ago, and countries started developing their own supply already, because they understood the problem. So China doesn't have the same leverage anymore.